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Discussion Starter #1
Is dual lambda control (using pre and post cat o2s) implemented on our cars? if so how do things like fabspeed o2 spacers or removal of the post cat o2s affect the mixture control?

Tom
 

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Discussion Starter #6
it's news to me, I have always been told that secondary o2s are strictly for emissions purposes.
 

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it's news to me, I have always been told that secondary o2s are strictly for emissions purposes.
Agreed. I am under the impression that secondary o2's only job is to throw a CEL when the cat has stopped doing its job (or goes missing for some reason :) ) Most tunes deactivate the secondary O2's alltogether I believe.
 
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